Double Click

protected float onDoubleTapPost( float scale, float maxZoom ) {
if ( mDoubleTapDirection == 1 ) {
if ( ( scale + ( mScaleFactor * 2 ) ) <= maxZoom ) {
mDoubleTapDirection = -1;
float scaledata = scale + mScaleFactor;
return 2.5f;//scale + mScaleFactor;
} else {
return maxZoom;
}
} else {
mDoubleTapDirection = 1;
return 1f;
}
}

E-Learning Android

http://javatechig.com/android/android-listview-tutorial
http://javatechig.com/android/android-handler-example

http://www.kilobolt.com/day-11-threads-and-graphics.html

///ListView Custom & Animation
http://blog.sephiroth.it/2011/04/04/imageview-zoom-and-scroll/

Simple Game

http://www.bestittutorials.com/simple-game-android-eclipse/

make-zoomable-linearlayout

http://stackoverflow.com/questions/15849060/how-to-make-zoomable-linearlayout